Jeremy Miller has a good summary of the general MVP impressions of Linq for Entities after the recent MVP Summit. Everyone seems impressed by the potential of the product, but I was very interested to hear other OR Mappers, specifically NHibernate, being preferred at this stage. Apparently there has been lots of feedback to the developers to make Linq for Entities a bit less invasive (so Plain Old CLR Objects can be Persistance Ignorant and require less configuration).
He also talks about the general feeling amount MVPs that the WebForms model is lacking, and a growing surge of interest in MonoRail. ScottGu is apparently thinking along the same lines. Exciting times. :-)